00452nam a2200133Ia 450000500170000000800410001702000220005805000200008010000180010024501090011825000080022726000560023565000270029120251229172856.0251229s9999    xx            000 0 und d  a978-0-903031-75-2  aZ 7914 .C3 1981  aCarr, Marilyn 0aEconomically appropriate technologies for Development Countriesban annotated bibliographycMarilyn Carr  aRev  aLondonb Intermediate Technology Publicationsc1981  aAppropriate Technology